As the United States heads into its 2026 midterm elections on 3 November, traders around the world will be monitoring not only the results but also how markets respond in the days and weeks that follow.

History suggests that while election night often grabs the headlines, some of the most significant market moves tend to come afterwards, driven by economic data, central bank expectations and changes in investor sentiment rather than politics alone.

For traders, the key question may not simply be who wins, but which markets react the most, how long those moves last, and where new opportunities emerge.

MARKET ANALYSIS

Why the midterms matter

The US midterm elections determine control of Congress, including all 435 seats in the House of Representatives and 35 Senate seats.

The outcome could influence future debates around government spending, taxation, regulation, defence budgets and economic policy. However, markets are often more focused on what election results mean for growth, inflation, interest rates and public borrowing than on politics itself.

With investors already positioning for different scenarios, surprises may have a bigger impact than the expected outcome.

Seven things the last five midterms tell us

Although no two elections are the same, analysing previous US midterm elections reveals several patterns that emerged across different market environments.

While past performance is not a reliable indicator of future results, these observations may help traders identify areas worth monitoring during periods of heightened market attention.

1. Markets calmed after the vote

Volatility eased after most recent midterm elections. In four of the last five cycles, daily swings in the Nasdaq were smaller in the month after the vote than in the month before. In 2014, the average daily move more than halved, falling from 1.03% to 0.41%. The exception was 2010, when a major Federal Reserve policy announcement drove additional market activity.

2. A bigger event followed soon after

Some of the biggest market moves came after election day rather than on it. In 2010, the Fed announced a major bond-buying programme the day after the vote. In 2018, a Federal Reserve meeting followed two days later. In 2022, a softer-than-expected inflation report two days after the election helped fuel a market rally, while in 2014, an OPEC decision later that month weighed heavily on oil prices.

3. Gold dipped, then climbed

Gold tended to weaken immediately after election day in most of the previous midterms, but it moved higher over the following month in all five cases studied.

This suggests that short-term election relief can temporarily reduce demand for safe havens, while longer-term drivers such as interest rates, inflation expectations and economic growth regain influence.

4. Bond markets saw notable moves

Attention often shifted to US Treasury markets after the vote. In four out of the last five midterm elections, the 30-year Treasury yield saw a larger move than the 2-year yield during the following month. In 2022, the 30-year yield fell by 0.84 percentage points, while the 2-year yield fell by 0.36 percentage points. The 10-year Treasury yield also moved lower in four out of the last five post-election periods.

5. Oil followed its own story

History suggests that oil prices are more influenced by supply, demand and geopolitical developments than by changes in congressional control.

In four of the last five midterms, crude oil simply continued the trend that was already in place before the election. Global energy developments may therefore remain a more important driver than political headlines alone.

6. Safe havens were sold

The Japanese yen, a classic safe haven, weakened against the US dollar the day after the election in four out of the last five midterm elections. Together with calmer stock markets, this suggests investors stepped back from defensive positions once the outcome became clearer.

7. Currency markets often reacted later

Election night did not always produce the biggest moves in currency markets. While immediate reactions were often limited, GBP/USD moved by around 3% on average during the month following the last five midterm elections.

The starting point for 2026

Going into four out of the last five midterm elections, one party controlled both chambers of Congress, as Republicans do today. Each time, at least one chamber changed hands. While this does not indicate what may happen in 2026, it provides useful context for understanding how markets may assess the potential outcomes of this year's vote, including the possibility of an unchanged Congress.

WHERE TO LOOK

Markets to watch

US Indices

History points to calmer trading once the result is known. The test is whether a move on 4 November holds through the jobs and inflation data that follow.

Key instruments: US500, USTEC and US30.

Safe-haven markets: Yen and Gold

The two classic safe havens. The Japanese yen and gold are both widely watched during periods of market uncertainty. If investors relax once the vote is done, both could come under pressure. If the count is slow or disputed, they could be supported.

Key instruments: USDJPY and XAUUSD.

Forex Markets

Currency markets may react to changing expectations for Federal Reserve policy, economic growth and risk appetite.

Key instruments: EURUSD, GBPUSD, USDJPY.

Energy Markets

Oil prices have historically been influenced more by global supply, demand and geopolitical developments than election outcomes alone. Nevertheless, energy markets may remain in focus as investors assess potential policy implications.

Key instruments: WTI and Brent.

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Important considerations

Leverage and margin calls: Futures are traded on margin and revalued every day. If prices move against you, you may be required to add funds, and losses can exceed your initial margin deposit.

Selling options is high risk: While option buyers can lose no more than the premium paid, option sellers may be exposed to substantial losses.

Expiry and rolling: Futures and options contracts have expiry dates. Maintaining a position beyond expiry may require rolling into a later contract, which can involve additional costs.

Overnight liquidity: While many futures markets trade for extended hours, liquidity can vary throughout the trading day. Lower liquidity may result in wider spreads and more pronounced price movements

POTENTIAL OUTCOMES

Three scenarios markets may be considering

As election day approaches, market participants are assessing a range of potential outcomes and what they could mean for the policy environment in the years ahead. While the exact composition of Congress remains uncertain, attention is largely focused on three broad scenarios.

Republicans keep both chambers

With Republicans retaining control of both the House and Senate, current policy priorities could remain in focus, including fiscal spending, taxation and government borrowing. Market participants may look for signs of how the outcome could influence sentiment across equities, bonds, currencies and commodities.

Split Congress

If control of Congress is divided between the two parties, passing major legislation could become more challenging. While a slower pace of policy change can sometimes be viewed as supportive of market stability, it may also increase the likelihood of political gridlock around budget and spending decisions.

Democrats win both chambers

A Democratic-controlled Congress could increase focus on areas such as healthcare, housing, energy affordability and consumer costs. Investors may also monitor how changes in congressional oversight and legislative priorities influence different sectors of the economy.

MANAGING RISK

What traders should keep in mind

Major political events such as the midterm elections can increase volatility and lead to rapid price movements across multiple asset classes.

Expect wider spreads overnight

Liquidity is thinner during Asian hours, when the first results arrive,  potentially leading to wider spreads and higher trading costs.

Plan for gaps and slippage

Prices can jump past your stop-loss level. A standard stop-loss is not guaranteed to fill at your price.

Size positions carefully

With leverage, a small move can mean a large loss. Consider trading smaller than usual.

Check your margin

Margin requirements can change around major events. Make sure you have enough funds to avoid positions being closed.

Mark the data dates

The jobs report on 6 November and inflation data on 10 November could move markets as much as the vote.

Allow for a slow result

Close races, a possible 1 December runoff and legal challenges, which state officials say they are preparing for, could keep uncertainty going.

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Disclaimer: The material provided is for information purposes only and should not be considered as investment advice. Past performance is not indicative of future results.